Question Detail
Question
What is the effect of increasing temperature on a reaction where ΔH > 0 and ΔS < 0?
Correct Answer
Option C is the correct answer.
Detailed Explanation
For ΔH > 0 and ΔS < 0, the equation ΔG = ΔH - TΔS shows that the -TΔS term is positive (since ΔS is negative). As T increases, this positive term becomes larger, making ΔG more positive and the reaction less spontaneous.
Hint
Plug the signs into ΔG = ΔH - TΔS. What happens to ΔG as T increases?